condition mean min max ZT0-3 68.66149579 66.47263004999999 70.85036153 ZT4-7 80.92035337749999 73.19086362499999 88.64984313 ZT8-11 80.4015499625 80.22861656 80.57448336499999 ZT12-15 48.682944105000004 40.78230755 56.58358066 ZT16-19 72.523385015 63.824400749999995 81.22236928 ZT20-23 116.03450923500002 101.74016742 130.32885105000003